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Hourly Forecast
Daylight Hours
06:38
Sunrise
18:54
Sunset
Moon
Waxing Crescent
11:35
Moonrise
20:22
Moonset
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Weather in Gurnee today, September 15, 2026
Gurnee stays under cloudy skies on September 15, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open.
Temperatures climb from an overnight low near 18°C toward a daytime high of about 26°C. Relative humidity sits between 75% and 96%, reaching its peak around 21:00. Expect gentle winds, highest near 16:00 at 3.8 km/h.
Through the afternoon cloud remains the main feature, with cover near 100% around 18:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 15.0 km, briefly nearer 13.3 km. Expect sunrise at 06:38, sunset at 18:54, and 12 hours 16 minutes of sunlight today overall.
The practical takeaway for Gurnee on September 15, 2026 is a cloudy day that stays usable, just not particularly bright, around 26°C.
Frequently asked questions about weather in Gurnee
How warm does it get in Gurnee?
The warmest month in Gurnee is July, with average high temperatures of 27°C. The average temperature during this period is around 23°C.
How cold does it get in Gurnee?
The coldest month in Gurnee is January, with average low temperatures of -6°C. The average temperature during this period is around -3°C.
What is the wettest time of year in Gurnee?
The wettest month in Gurnee is May, with an average of 122mm of precipitation.
What is the driest time of year in Gurnee?
The driest month in Gurnee is February, with an average of 55mm of precipitation.
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